U.S. Vice President Joe Biden, center, reacts as he is presented with flowers after he arrived onboard the Air Force Two at the airport in Chengdu, China, Saturday, Aug. 20, 2011. (AP Photo/Ng Han Guan, POOL)

Associated Press
U.S. Vice President Joe Biden, center, reacts as he is presented with flowers after he arrived onboard the Air Force Two at the airport in Chengdu, China, Saturday, Aug. 20, 2011. (AP Photo/Ng Han Guan, POOL)
U.S. Vice President Joe Biden, center, reacts as he is presented with flowers after he arrived onboard the Air Force Two at the airport in Chengdu, China, Saturday, Aug. 20, 2011. (AP Photo/Ng Han Guan, POOL)
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